Solar.web

Yes, your Fronius user account is valid across all platforms and can be used for both the Solar.web website and the Solar.web app. A separate account is not required.

Yes, you can change your data at any time in the “User settings” of your Fronius user account. Please note that by agreeing to the Fronius Solar.web General Terms & Conditions (GTC), you are also confirming that the information you have provided is correct. Incorrect data constitutes a violation of the GTC. For this reason, please make sure that your details are always correct and up to date.

In this case, please contact our customer service team via the contact form. As your account contains confidential data and full access to your PV system is granted when the account holder’s e-mail address is changed, please attach a scanned copy of a valid ID document.

Please make sure that the registration process is complete. After registration you will receive an email containing a confirmation link. Open it and complete the first login process by filling in the rest of your details.

If you have already completed your registration, please use the ”Forgot password?” function in the Solar.web login area.
If this does not work, please contact our customer service team via our contact form and include the email address associated with your user account.

No access to this email address?

Please also send us a scanned copy of a valid ID document. This is for security reasons, as confidential data can be viewed in your account.

Your personal data helps us to better tailor products and services to your needs. In the case of chargeable services such as a Fronius warranty or Solar.web Premium, your details will also be used for invoicing.

You can delete your user account at any time via the user settings. Please note that all production and consumption data for your system will also be permanently removed. If you have purchased chargeable services, we are legally obligated to continue to store certain data.

Solar.web Premium is an upgrade to your user account with advanced functions such as:

• Detailed analysis of self-consumption and energy costs
• Visualization and evaluation of archive data and forecasts
• Reporting functions
• Analysis of storage systems

Membership is available in three-month, one-year, or three-year terms. You will receive a renewal notification one month before it expires.

Pricing varies based on the selected term and is clearly displayed during the ordering process. Purchases can be made exclusively through Solar.web, not through your installer.

After logging in, you can check whether your Premium membership is active by going to the user settings. The upgrade applies to your entire user account, not to individual products. However, the forecast function can only be activated for one PV system.

If Premium access has not been activated, please contact our customer service team via our contact form and include the email address associated with your user account.

Note: Although both interfaces are highly intuitive, the app and browser versions are structured differently from a technical perspective. Some Premium functions are therefore only available in the browser version. If you want to use all functions, we recommend using the mobile view of Solar.web via the web browser.

How to carry out an update:

1. Go to ”Settings” → ”Components”.
2. Check the box next to the desired component.
3. Click on the red “Update” button and confirm with “OK” in the pop-up.
4. After completion, the new version number will be displayed on the component page.

Important: The power supply must not be interrupted during the update.

With Solar.web Premium, you can activate production forecasts for a PV system. These are displayed in the energy balance under daily and monthly views, helping you align your energy use with expected production to maximize self-consumption and improve cost efficiency.

If you cannot activate the forecast, check your system rights. Owner or supervisor permissions are required for activation. The function is not available to users with guest permissions.

With remote configuration, owners and supervisors can change device settings on GEN24, Tauro and Vertos inverters directly via Solar.web. The function is available from firmware version 1.34 and is accessed via ”Settings” → ”Components” → ”Device settings”.

Every change is documented in the message center so that the owner can see which user has made which settings.

In the Solar.web app, remote configuration is also available from app version 4.0. You can access the feature via the “Devices” tab by selecting the desired device and then navigating to “Device settings.” The prerequisite for this is firmware version 1.40 on the inverter.

If you do not want the installer or other users to be able to configure your devices remotely, you have two options:

• Disable the user’s permissions in the permissions management or change their role to “Guest”.
• Deactivate the remote configuration directly on the user interface of the inverter under “Communication” → “Solar.web” → “Remote Configuration”.

The presentation mode is an easy way to display the data for a PV system on large screens and is ideal for public or formal environments. The display is updated regularly and is based on an individual link that is opened in a browser (recommended: Google Chrome).

Prerequisites:

• Active Premium membership
• Internet connection
• Browser with autostart and full-screen function (optional)

Functions and notes:

• The mode can be activated in the settings of the respective system under “Permissions”.
• The visualization is limited to a single PV system. Browser extensions such as “revolver tabs” can be used for multiple systems.
• You can also integrate it into your own website. To do so, the domain must be specified during activation.
• Other content cannot be displayed in presentation mode.
• The mode can be opened automatically when you start your device if the link is stored as the start page.
• The language depends on the language setting of your browser.
• The mode works on all smart devices, but was specially developed for large screens.

Problems with activation?

Make sure that your Premium membership is active. You can check this in the user settings for your account.

The Wattpilot can be added in Solar.web if the following requirements are met:

• A PV system must be available (use without a PV system is not possible).
• The Wattpilot can only be assigned to one PV system at a time. A change requires prior removal from the existing system.
• Several Wattpilot charging stations can be added to a PV system.

Make sure that Wattpilot data is visible by doing the following:

• The Wattpilot and the inverter are added to the PV system under “Settings” → “Components”.
• You have at least supervisor permissions.
• The Wattpilot uses firmware version 36.0 or higher.
• The inverter (GEN24 or Tauro) uses firmware version 1.23 or higher.
• Both devices are connected to the Internet and correctly paired (via the Solar.wattpilot app under “Cost Optimization”).

Data gaps may occur if:

• The Wattpilot has no Internet connection (e.g. if the WiFi is weak).
• The Wattpilot Go is used on the go and is not paired with an inverter in the same PV system.

The battery control makes it possible to prepare the battery manually for a possible power failure. After activation via the Solar.web app, the battery is charged to the maximum state of charge (SoC) and locked for 24 hours. Discharging is not possible during this time in order to reserve energy for a backup power situation. In the event of a power failure, the stored energy can be used. After the power failure, the battery remains locked in preparation of further failures. If no power failure is detected, the battery is released again automatically or manually.

Prerequisites:

• GEN24 Plus with firmware version 1.34.6 or higher
• DC-coupled battery
• Fronius Smart Meter
• Solar.web app (No Premium membership required)

Permission management:

• Only users with owner or supervisor permissions can activate the function. Guests can view the status but cannot make any changes.

Further information:

• The maximum state of charge can be set individually on the inverter.
• The battery is charged at a minimum of 1.5 kW so as not to overload the household fuse.
• If there is sufficient surplus PV energy, charging is supplied exclusively from this source.
• Grid consumption due to battery charging is not currently shown in the energy balance, but can be viewed in the “Power from grid” channel in the history graph.
• The function can also be used without a system with backup power function, e.g. to test the energy storage device. PV Point offers a simple backup power solution.

Widgets are only displayed if your PV system supports the required components.
If a required component is missing, the corresponding widget cannot be used and will remain empty.

Examples:

• Battery widget: A compatible battery must be connected to the inverter.
• Consumption widget: A Smart Meter must be installed at the feed‑in point to measure energy consumption.

Your system must satisfy the following requirements to use the Energy Cost Assistant:

• Compatible inverters: GEN24 Plus or Verto Plus (also via a GEN24 or Verto upgrade using Fronius UP.storage; Fronius Symo Hybrid is not supported)
• Compatible battery: Fronius Reserva, Reserva Pro, or compatible batteries from BYD or LG
• Fronius Solar.web Premium
• Latest inverter firmware (version 1.34.6 or higher)
• Weather forecast enabled

Additionally, one of the following conditions must be met to allow the Energy Cost Assistant to perform optimizations:

• Dynamic electricity tariff (e.g., spot market rate or time-dependent tariff)
• System feed-in limit

The Energy Cost Assistant only charges the battery from the grid when it makes economic sense to do so. As part of its calculations, the ECA considers that every charging cycle puts a strain on the battery and therefore results in indirect costs. The ECA will only allow charging from the grid if:

• There is insufficient energy available to cover the expected load
• The electricity price is so low that charging is worthwhile despite the extra battery wear
  
  
The system’s behavior is also influenced by the selected operating mode:

• Maximum savings: the battery is charged from the grid more frequently to keep energy costs as low as possible
• Balance: the battery is charged only if the price differential is great enough to justify it.

Detailed information about how the Energy Cost Assistant works is available on the web portal. Information in the “Operating mode” area under “Settings” shows how the Energy Cost Assistant is managing the battery right now and over the course of the day. This information includes aspects such as:

• Scheduled charging and discharging processes
• Underlying generation and consumption forecasts
• Electricity tariffs used
• Detected feed-in limits

A graphical representation helps to clearly understand the charging and discharging activity.

The app shows whether the Energy Cost Assistant is currently active. Detailed information about the logic underlying how the ECA operates is available on the web portal.

Once enabled, the Energy Cost Assistant will first need some time to analyze the system and generate forecasts.

During this phase, optimizations are limited or not performed at all. It may therefore appear that the Energy Cost Assistant is doing nothing. As soon as sufficient data is available, the Energy Cost Assistant will automatically start to optimize your processes.

The Energy Cost Assistant is not available in every country or with every tariff.

For an up-to-date list of supported countries, energy providers, and tariffs, visit:

https://www.solarweb.com/Home/PremiumInfo

For time-dependent tariffs, the Energy Cost Assistant works most effectively when the price difference between off-peak and peak tariffs is at least 4 euro cents per kWh (including grid fees). If the differences are minor, charging from the grid may be restricted.

Use in conjunction with energy communities is not currently recommended, because varying electricity prices can inhibit the ECA’s optimization functions.

It is currently only possible to enable the Energy Cost Assistant for one system per Fronius Solar.web user account.

The Energy Cost Assistant can also be used in Germany.

When using the function to permit battery charging from the grid, certain requirements must be met. Otherwise, there is a risk that the feed-in tariff will be adversely affected, because legal requirements must be met when combining self-generated electricity with electricity purchased from the grid.

The Energy Cost Assistant can also be used without grid charging. No additional requirements apply in this case.

To ensure that energy charged from the grid is not fed back into the public power grid, the following conditions must be met:

• Compatible inverters: GEN24 Plus or Verto Plus with firmware version 1.36.5 or higher
• Fronius Smart Meter IP with firmware version 3.0.0-0002 or higher, connected to the network via LAN or WiFi
• MQTT connection between the primary meter and the inverter

If a Fronius Smart Meter is already integrated via a different interface (Modbus TCP or RTU) and an energy storage device has been configured, the existing storage device and Smart Meter configuration must be removed. It’s then possible to switch to the MQTT connection.

If your system is displayed as “offline” or no current data is visible, there is usually a problem with the Internet connection or data transfer.

Possible causes:

• Network connection interrupted: The inverter or router has lost the connection. A restart can help: Switch off the battery, disconnect the inverter on the AC and DC sides, disconnect the router from the power supply, wait a few moments and then switch everything back on again.
• Changes in the home network: If, for example, the WiFi password has been changed or the router has been replaced, the inverter must be reconnected to the network. The procedure depends on the device type.
• Internet connection not set up: Check with your installer whether commissioning has been completed. The Internet connection is set up via the local user interface of the inverter.
• WiFi signal too weak: The inverter should display at least two out of four bars. If the signal is weak, a WiFi booster may help or, alternatively, an Ethernet connection can be set up.

You can find detailed instructions and help with the Internet connection and device setup on the support page for your inverter model.

If no archive data is displayed, this may be due to the following reasons:

• Components hidden: Check under “Settings” → “Components” to ensure all relevant devices, such as energy meters and inverters, are visible.
• Date and time set incorrectly (only for SnapINverters): This can be corrected via the local user interface of the inverter.
• Sending of archive data is deactivated (only for SnapINverters): Activate this function under “Settings” → “Fronius Solar.web” on the local user interface.
• Internet connection unstable or interrupted: In this case, a firmware update or restarting the inverter may help.

You can find detailed instructions and help with the Internet connection and device setup on the support page for your inverter model.

The energy balance is designed to show how consumption is covered and how the generated energy is used.

Charging the battery from the grid is not currently shown separately in this display.

The energy is only counted as consumption when it is drawn from the battery. This behavior is independent of the use of the Energy Cost Assistant, but becomes more noticeable when using it, as energy is specifically charged from the grid into the battery during that process.

For a detailed analysis, the “Energy from the Grid” history view can be used in the Solar.web portal under Analysis → History.

A failed remote update can have various causes:

• Unstable Internet connection of the inverter
  Ensure that the inverter has a stable connection to the Internet. If necessary, carry out a speed test: speedtest.net. For WiFi connections, check the signal strength on the local user interface of the inverter. The inverter should recognize the WiFi with at least 2 out of 4 black bars. If the signal is too weak, position the router closer or use a WiFi booster. Alternatively, the connection can also be established via LAN.
  
  
• Solar.web server overloaded
  If the connection is stable, a temporary overload or malfunction of the Solar.web service may be the cause. Try the update again at a later time.
  If the problem persists, please contact Fronius Customer Support via our contact form.

Possible causes:

Missing or incorrect tariff settings

The earning calculation is based on:

• Feed-in compensation = electricity fed into the grid × feed-in tariff
• Savings = self-consumed electricity × tariff for electricity drawn from the grid

In order for Solar.web to calculate these values correctly, valid tariffs with start and end dates must be entered under “Settings” → “Tariffs”. Make sure that the corresponding energy meters are activated (check the boxes). Tariffs are subject to change at any time. Once saved, the new values may take a moment to update.

Fronius Smart Meter is hidden or has failed

If only the production is displayed, data from the Fronius Smart Meter may be missing.

Under “Settings” → “Components”, check whether the Smart Meter is visible and active under “Energy meters”. If not, click on “Show all” and activate the Smart Meter using the eye symbol.

If there is no connection between the Smart Meter and the inverter, please contact your installer.

Possible causes:

PV system not yet created online
Create your PV system via the Fronius Solar.start app or directly on Solar.web (“Add PV system”). As soon as the system sends data, the inverter will be displayed.

Only guest permissions available
The components in the settings can only be viewed if you have owner or supervisor permissions. The display is restricted if you only have guest permissions.

Recently started for the first time
After commissioning, it can take up to 2 hours until all components are visible. The display only appears when the first archive data packet has been sent to Solar.web (by default on the hour).

Components are hidden
Go to “Settings” → “Components” and click “Show all” under “Inverter”. Show hidden devices again using the crossed-out eye symbol under “Visible”.